\documentclass[a4paper]{article}
\usepackage[T1]{fontenc}
\usepackage[latin1]{inputenc}
\begin{document}
\begin{tabular}{|l|l|}
\hline
First vs best - Transpose&4.07730530936212e-18\\
\hline
First vs best - Exchange&2.17457280454137e-17\\
\hline
First vs best - Insert&3.95591160889952e-18\\
\hline
Exchange vs Insert - First&3.95591160889952e-18\\
\hline
Exchange vs Insert - Best&3.95591160889952e-18\\
\hline
\end{tabular}
\end{document}
